How does Jet Propulsion Work?

A jet engine works by taking in a massive amount of air, compressing the air, mixing it with fuel, igniting the fuel air mix and expelling the highly compressed hot gasses through a series of turbine blades. Fans do most of the work here, the intake fans are known as compressors while the exhaust fans are known as turbines and drive the compressors. The hot gasses can also be jetted or restricted to focus the thrust from the engine.